package com.ganwei.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author 26782
 */
@Service
public class PaymentService {

    /**
     * 正常访问，一切ok的
     *
     * @param id
     * @return
     */
    public String paymentInfo_ok(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + "paymentInfo_ok,id:" + id;
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_timeoutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")
    })
    public String paymentInfo_timeOut(Integer id) {
        int timeNumber = 3;
        try {
            TimeUnit.SECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池：" + Thread.currentThread().getName() +
                "paymentInfo_TimeOut,id:" + id + "好事";
    }

    public String paymentInfo_timeoutHandler(Integer id) {
        return "线程池：" + Thread.currentThread().getName() +
                "paymentInfo_TimeOut,id:" + id + "系统繁忙，请稍后再试";
    }

    /**
     * 服务熔断
     */
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            //是否开启断路器
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),
            //请求次数
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),
            //时间窗口
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"),
//            失败达到多少后跳闸
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60")
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("******id 不能复数");
        }
        String uuid = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t" + "调用成功，流水号：" + uuid;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id")Integer id){
        return "id 不能复数，请稍后再试，id"+id;
    }
}
